Mr. Bond, we are currently investigating a fix for this through https://bugs.eclipse.org/203252 which would is targeted for the next service release of Helios.

The background on it is that in the distant past, it was requested that only a certain subset of tags be indented (you can see that ul, ol, table, and some others properly indent) as this was the "proper" style. I don't know if that holds true today.